@inbook{401546,
title = {7. Mappings of decompositions},
booktitle = {Foundations of the Theory of Groupoids and Groups},
series = {GDML\_Books},
publisher = {VEB Deutscher Verlag der Wissenschaften},
address = {Berlin},
year = {1974},
pages = {56-60},
url = {http://dml.mathdoc.fr/item/401546}
}
(éd.). 7. Mappings of decompositions, dans Foundations of the Theory of Groupoids and Groups, GDML_Books, (1974), pp. 56-60. http://gdmltest.u-ga.fr/item/401546/